TexParameter problem

Hello, it's me again.

Now I have another problem. I want to import a texture and set some parameter of the texture.

So, to set the parameter of the texture you need to use for example in opengl (c language)

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

so should become something like that in c#

GL.TexParameter(GL.Enums.TextureTarget.TEXTURE_2D, GL.Enums.TextureParameterName.TEXTURE_MAG_FILTER, GL.Enums.All.LINEAR);

But there is no functions with an enum as last parameter(one with float and one with an integer).

I think there is just something I do not understand. Maybe a cast would be enough.

Does someone know what is wrong and why (some explanations bout the meaning of the last parameter would be really appreciated)

Thanks.

edit: is there a way to load images with openTk or do we need to use the c# bitmap or tao.devil?